首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 125 毫秒
1.
《分析化学》2007,35(3):369-369
电分析化学利用物质的电学和电化学性质进行表征与测量。它不仅能进行组成和形态分析,而且对电极过程的理论研究和生命科学、信息科学、环境科学的发展具有重要的作用。该书从电分析化学研究涉及的电化学基础知识出发,总结了现代电分析化学研究常用方法的基本原理,概括和吸收了国内外近年来在电分析化学与生物传感器领域的新成就和相关文献,阐述了当代电分析化学及其在生命分析化学特别是生物电化学研究中的应用,  相似文献   

2.
生物电化学简介   总被引:4,自引:0,他引:4  
简单介绍了生物电化学研究领域的概况。包括:生物膜与生物界面模拟研究(SAM膜模拟生物膜的电化学、液/液界面模拟生物膜的电化学),用于生命科学的电化学技术(电脉冲基因直接导入、电场加速作物生长、癌症的电化学疗法、电化学控制药物释放、在体研究的电化学方法、生物分子的电化学行为)和电化学生物传感器(酶电极传感器、微生物电极传感器、电化学免疫传感器、组织电极与细胞器电极传感器、电化学DNA传感器)。  相似文献   

3.
周南 《分析试验室》2002,21(1):95-96
本次会议由英国皇家化学会分析化学部电化学分析组和该部西北区分部联合主办 ,于 2 0 0 1年 4月 2 2日至 2 5日在英国Manchester市Solford大学召开 ,旨在为讨论电分析技术的最新进展及其应用提供一论坛、并作若干富有前景的展望。内容涉及应用现有方法论解决问题、改性表面的设计和应用、微型化系统、电化学分离和生物传感器等。特邀报告共 32个。现分析如下。 ( 1 )R .Comp ton ,电分析中的双重活化 ;声电分析、激光活化伏安法、热增强溶出伏安法 ;( 2 )D .Mandler,电分析化学中的自集形成单层 ;( 3)J.…  相似文献   

4.
电分析化学利用物质的电学和电化学性质进行表征与测量。它不仅能进行组成和形态分析,而且对电极过程的理论研究和生命科学、信息科学、环境科学的发展具有重要的作用。该书从电分析化学研究涉及的电化学基础知识出发,总结了现代电分析化学研究常用方法的基本原理,概括和吸收了国内外近年来在电分析化学与生物传感器领域的新成就和相关文献,阐述了当代电分析化学及其在生命分析化学特别是生物电化学研究中的应用,对电分析化学与生物传感器新技术的原理和方法作了深入浅出的论述,并对各领域的应用作了详细的介绍。该该书作者南京大学鞠熀先教…  相似文献   

5.
超微电极的新进展   总被引:7,自引:0,他引:7  
超微电极是当前电化学前沿领域和研究热点之一。本文主要介绍了超微电极的基本原理、种类和特点 ,并结合国际上超微电极的最新研究现状 ,介绍了超微修饰电极的特点及其在电分析化学中的应用 ;超微电极在扫描探针显微学、固态电化学、生物细胞体内检测和分析化学等方面中的应用。  相似文献   

6.
李晶  汪尔康 《分析化学》1995,23(11):1341-1348
本文评述了原子力显微镜原理和技术及其在现场电化学和电分析化学领域中的应用,并展望了扫描隧道显微镜和原子力显微镜在电化学和电分析化学中的发展方向。  相似文献   

7.
刘盛辉  何品刚 《分析化学》1996,24(11):1301-1304
本文研究了单链DNA分子在石墨电上的固定方法,采用核酸分子杂交技术,使具有电化学活性的米托蒽酯嵌入DNA分子双螺旋结构的碱基对中,在电极上形成dsDNA-MS层,通过伏安法研究DNA分子和MX相互作用的电化学行为。  相似文献   

8.
钴卟啉修饰电极为基底的葡萄糖酶电极   总被引:1,自引:1,他引:1  
生物电化学传感器的开发和应用是目前电分析化学研究中的一个重要方向,其中最引人注目的是电流式生物电化学传感器的研究。传统的电流式生物电化学传感器的基础电极采用的是能检测氧气和过氧化氢的贵金属电极。本文采用四苯基钴卟啉化学修饰电极代替  相似文献   

9.
双层类脂膜及其在电化学生物传感器中的应用   总被引:11,自引:0,他引:11  
罗立强  杨秀荣 《分析化学》2000,28(9):1165-1171
详细评述了各种双层类脂膜包括传统的双层类脂膜(BLM)、固体载体支撑的自组双层类脂膜(s-BLM)、固体载体支撑的混合双层类脂膜(e-BLM)的制备方法和特性,比较了其优缺点。介绍了双层类脂膜在电化学生物传感器中的应用,并展望了发展前景。  相似文献   

10.
玻璃微、纳米管及其在电分析化学中的应用   总被引:2,自引:0,他引:2  
本文简单介绍了玻璃微、纳米管的发展历史及其制备进展。对其在分析化学中的应用进展,特别对其在液/液界面电化学和电分析化学研究中的应用进行了较详尽地评述和展望。  相似文献   

11.
The past, present, and future of the application of self-assembled monolayers (SAMs) in electroanalytical chemistry is reviewed. SAMs for electroanalytical applications have been introduced in the early 1990s and since then have been exploited for the detection of different species ranging from metal ions to biomolecules and microorganisms. This review describes the different types of monolayers, surfaces on which they have been assembled, the various analytes, which were determined, and the various electrochemical techniques employed. The prospective and perspectives of this topic are discussed.  相似文献   

12.
Work done on applications of modified electrodes to electroanalytical chemistry and digital instrumentation for electrochemical measurements in our laboratory in recent years will be presented. First, applications of modified electrodes with conducting polymer films and selfassembled monolayers (SAMs) of thiolated cyclodextrins will be demonstrated.  相似文献   

13.
Su L  Mao L 《Talanta》2006,70(1):68-74
This paper describes novel electrochemical properties of gold nanoparticles/alkanedithiol conductive films and their electroanalytical applications for voltammetric determination of trace amount of one kind of environmental pollutants, catechol. The conductive films are prepared by closely packing 12-nm diameter gold nanoparticles (Au-NPs) onto Au electrodes modified with the self-assembled monolayers (SAMs) of alkanedithiols (i.e., HS(CH2)nSH, n = 3, 6, 9). The assembly of the Au-NPs onto the SAM-modified electrodes essentially restores the heterogeneous electron transfer between Au substrate and redox species in solution phase that is almost totally blocked by the SAMs and, as a result, the prepared Au-NP/SAM-modified electrodes possess a good electrode reactivity without a remarkable barrier toward the heterogeneous electron transfer. Moreover, the prepared Au-NP/SAM-modified electrodes are found to exhibit a largely reduced interfacial capacitance, compared with bare Au electrode. These electrochemical properties of the Au-NP/SAM-modified electrodes essentially make them very useful for electroanalytical applications, which is illustrated by voltammetric determination of trace amount detection of environmental pollutant, catechol.  相似文献   

14.
自组装膜技术在电分析化学中的应用   总被引:14,自引:0,他引:14  
本文介绍了自组装膜的类型、结构并着重评述了有机硫化物自组装膜在电分析化学方面的应用进展。  相似文献   

15.
评述了卟啉及其金属配合物自组装膜在电分析化学领域的应用研究进展,并简要介绍了卟啉的结构及其金属配合物的特点。对卟啉类自组装膜在电分析化学领域内的应用作了展望。  相似文献   

16.
Self-assembled monolayers (SAMs) provide a convenient, flexible and simple system to tailor the interfacial properties of metals, metal oxides and semiconductors. Monomolecular films prepared by self-assembly are attractive for several exciting applications because of the unique possibility of making the selection of different types of terminal functional groups and as emerging tools for nanoscale observation of biological interactions. The tenability of SAMs as platforms for preparing biosurfaces is reviewed and critically discussed. The different immobilization approaches used for anchoring proteins to SAMs are considered as well as the nature of SAMs; particular emphasis is placed on the chemical specificity of protein attachment in view of preserving protein native structure necessary for its functionality. Regarding this aspect, particular attention is devoted to the relation between the immobilization process and the electrochemical response (i.e. electron transfer) of redox proteins, a field where SAMs have attracted remarkable attention as model systems for the design of electronic devices. Strategies for creating protein patterns on SAMs are also outlined, with an outlook on promising and challenging future directions for protein biochip research and applications.  相似文献   

17.
In this review, laser-induced graphene (LIG) -based electrodes are discussed by covering such essential areas, as a characterization of LIG material properties necessary for electroanalysis, including data on LIG sheet resistance, wettability, spatial resolution, electrochemical characteristics, as well as correlations of “process” - “properties” - “electroanalytical characteristics”of LIG-electrodes. Moreover, typical and innovative LIG-based electrodes designs for electroanalytical applications, including combined multi-analyte multimodal wearable sensors, interdigitated electrodes, are shown. The essential data related to LIG in electroanalysis are summarized in tables. The authors also discussed recent LIG-based electroanalytical applications. Close attention has been paid to LIG glucose sensors and biosensors.  相似文献   

18.
Nonionic Fluorosurfactant Zonyl FSN self-assembly on Au(111) is investigated with scanning tunneling microscopy under ambient conditions. STM reveals that the FSN forms SAMs on Au(l11) with very large domain size and almost no defects. A (mean square root of 3 x mean square root of 3)R3 degree arrangement of the FSN SAM on Au(111) is observed. The SAMs show excellent chemical stability and last for at least a month in atmospheric conditions. The structure and stability of the FSN SAMs are compared with those of alkanethiols SAMs. It is expected that FSN may serve as a new kind of molecule to form SAMs for surface modification, which would benefit wider applications for various purposes.  相似文献   

19.
The aim of this paper is to give a brief overview of chemometric techniques based on factorial designs and response surface methodologies used in the optimization of electroanalytical methods. Chemometric techniques have several important advantages over one-way optimization for analytical applications, including a relatively low cost, a reduced number of experiments, and possibilities to evaluate interactions among variables. These techniques also enable the selection of optimal experimental conditions, helping to avoid trivial mistakes during optimization. Despite these facts, chemometric techniques have rarely been applied to electroanalytical data, especially in comparison with their use in spectroscopy. The application of chemometric methods in electroanalytical chemistry has been mostly used for solving overlapping signals, multivariate calibration methods, model identification and optimization of analytical procedures. This review is focused on the latter applications and overviews the role of full or fractional factorial designs (first-order designs), as well as second-order designs, such as central composite, Doehlert and Box-Behnken designs, for optimization of electroanalytical methods. A discussion of chemometric-related advantages is also given for stripping analyses, flow injection systems with amperometric detection, differential pulse voltammetry, square wave voltammetry and electrochemical sensor preparation.  相似文献   

20.
Here we describe the behavior of self-assembled monolayers (SAMs) of 4'-cyanobiphenyl-4-thiol (CBPT) on Au(111) upon electron irradiation. Under such a treatment, the aromatic framework of CBPT SAMs is laterally cross-linked while the nitrile groups, located at the SAM-ambience interface, are reduced to active amine moieties which can be used as docking sites for the coupling of other species. This makes CBPT monolayers as a promising system for conventional and chemical lithography as well as for nanofabrication. Along these lines, we demonstrate the preparation of complex polymer brushes, patterning of the underlying substrate, and fabrication of molecule-thin, free-standing membranes on the basis of CBPT SAMs. The balance between the application-favorable processes and defragmentation in these films is studied in detail, and comparison to the well-established (for the relevant applications) system of 4'-nitrobiphenyl-4-thiols is performed. Taking CBPT SAMs as a model system, the effect of the energy of the primary electrons on the extent of the chemical transformation and cross-linking in substituted aromatic SAMs is investigated.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号